12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 0,0 



All values have been reduced to a height of 22 ft. by apply- 

 ing the following corrections : 



1921-1926, May 25 - .007 in. 



1926, May 26-1930 — .012 in. 



Hours: The hours of observation were 9 h and i5 h except during 

 1921 July-1922 March, when the hour of obser- 

 vation was 9 h . These later readings have been 

 reduced to ^(9 h + I5 h ) by the following corrections : 



Notes: All values have been reduced to normal gravity (Lat. 

 45°) D y applying a correction of —.076 in. 

 The readings for 1929 January-June were too high and 

 have been corrected by comparison with Accra. 

 Precipitation. 



Site: The height of the ground on which the rain gage stands 

 is 6 ft. above Mean Sea Level. 



O'OKIEP, SOUTH AFRICA 

 Authority. 



Meteorological Office, Department of Irrigation, Pretoria, Union 

 of South Africa- 

 Pressure. 



Site: The height of the barometer cistern above Mean Sea Level 

 was 3060 ft. The values have been corrected to a height 

 of 3035 ft. by applying a correction of +.024 in. 

 Hours: The hour of observation was 6J h Greenwich mean time 



throughout the period. 

 Notes: All values have been corrected to normal gravity (Lat. 

 45 ) by applying a correction of —.041 in. 



PORT ELIZABETH, SOUTH AFRICA 

 Authority. 



Meteorological Office, Department of Irrigation, Pretoria, Union 

 of South Africa. 

 Pressure. 



Site: The height of the barometer cistern above Mean Sea Level 



was 181 ft. throughout the period. 

 Hours: The hour of observation was 6J h Greenwich mean time 



throughout the period. 

 Notes: All values have been corrected to normal gravity (Lat. 

 45°) by applying a correction of —.029 in. 



